nfsd_update_cmtime_attr(9)

💅 nfsd_update_cmtime_attr 💅

okay bestie, welcome to the Kernel API Manual ✨ — this is the page for nfsd_update_cmtime_attr, and yes it's a nine-paragraph man page about one function, but honestly? it's lowkey iconic. let's get into it 🫶

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🌸 NAME 🌸

nfsd_update_cmtime_attr — update a file's delegated ctime/mtime, and optionally other attributes (ie ATTR_ATIME). periodt. 💫

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✨ SYNOPSIS ✨

void nfsd_update_cmtime_attr (struct file *f , unsigned int flags );

like, that's the whole signature. short king energy 👑 no return value, it's a void, it just does things. 💅

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🎀 ARGUMENTS 🎀

• f — pointer to an opened file 🗂️ that's your main character right there
• flags — any additional flags that should be updated 🌈 like, the extra little attrs you wanna touch too

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🦋 DESCRIPTION 🦋

okay so here's the lore 📖: given that upon opening a file, delegated attributes were issued, this function updates f's attributes to the current times. ⏰✨ that's it, that's the vibe — the attrs get refreshed to now. ngl it's a small function but it's doing its thing 💜

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🔥 SEE ALSO 🔥

the whole friend group 🫶 all of these live in the kernel file ./fs/nfsd/nfs4state.c:

• nfs4_delegation_exists(9)
• hash_delegation_locked(9)
• revoke_delegation(9)
• nfs4_replay_free_cache(9)
• nfsd4_revoke_states(9)
• nfsd4_revoke_export_states(9)
• nfsd_slot_shrinker_count(9)
• nfsd_slot_shrinker_scan(9)
• nfsd4_put_client(9)
• nfsd_wait_for_delegreturn(9)
• nfsd_breaker_owns_lease(9)
• nfsd4_deleg_lm_open_conflict(9)
• nfsd4_process_open2(9)
• nfsd4_force_end_grace(9)
• nfs4_preprocess_stateid_op(9)
• nfs4_preprocess_seqid_op(9)
• nfsd4_release_lockowner(9)
• nfsd4_vet_deleg_time(9)
• nfsd4_deleg_getattr_conflict(9)
• nfsd_get_dir_deleg(9)

like… that's a squad 💀 go read them, iykyk 👑

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okay that's the whole page bestie, thank you for coming to my ted talk 🧚 this one shipped from ./fs/nfsd back in October 2026, mwah 💋 bye bye 🍓💖